:root {
    --primary-color: #0d6efd;
    --success-color: #198754;
    --danger-color: #dc3545;
    --dark-color: #212529;
}

body {
    background-color: #f8f9fa;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,.1);
}

.card {
    border: none;
    box-shadow: 0 0.125rem 0.25rem rgba(0,0,0,.075);
    margin-bottom: 1.5rem;
}

.card-header {
    background-color: #fff;
    border-bottom: 2px solid var(--primary-color);
    font-weight: 600;
}

.btn-api {
    min-width: 120px;
}

.response-container {
    background-color: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 0.375rem;
    padding: 1rem;
    margin-top: 1rem;
    max-height: 400px;
    overflow-y: auto;
}

.response-container pre {
    margin: 0;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.status-badge {
    font-size: 0.875rem;
    padding: 0.25rem 0.75rem;
}

.loading {
    display: none;
}

.loading.active {
    display: inline-block;
}

.token-status {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 5px;
}

.token-status.valid {
    background-color: var(--success-color);
}

.token-status.invalid {
    background-color: var(--danger-color);
}

.form-label {
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.alert {
    border-radius: 0.375rem;
}

footer {
    margin-top: 3rem;
    padding: 2rem 0;
    background-color: #fff;
    border-top: 1px solid #dee2e6;
}